Add process ID to terminal tab tooltips (#21955)

Closes #12807

| Before | After |
|--------|--------|
| <img width="1336" alt="Screenshot 2025-01-09 at 2 14 15 PM"
src="https://github.com/user-attachments/assets/8396cf41-74eb-4b5c-89e3-287e4f2ddd1d"
/> | <img width="1336" alt="Screenshot 2025-01-09 at 2 13 34 PM"
src="https://github.com/user-attachments/assets/b39c51e8-fd2c-41fe-9493-396057bd71db"
/> |

Release Notes:

- Added the process ID (PID) to terminal tab tooltips.

---------

Co-authored-by: Marshall Bowers <elliott.codes@gmail.com>
Co-authored-by: Danilo Leal <daniloleal09@gmail.com>

crates/terminal_view/src/terminal_tab_tooltip.rs

@@ -0,0 +1,36 @@
+use gpui::{IntoElement, Render, ViewContext};
+use ui::{prelude::*, tooltip_container, Divider};
+
+pub struct TerminalTooltip {
+    title: SharedString,
+    pid: u32,
+}
+
+impl TerminalTooltip {
+    pub fn new(title: impl Into<SharedString>, pid: u32) -> Self {
+        Self {
+            title: title.into(),
+            pid,
+        }
+    }
+}
+
+impl Render for TerminalTooltip {
+    fn render(&mut self, cx: &mut ViewContext<Self>) -> impl IntoElement {
+        tooltip_container(cx, move |this, _cx| {
+            this.occlude()
+                .on_mouse_move(|_, cx| cx.stop_propagation())
+                .child(
+                    v_flex()
+                        .gap_1()
+                        .child(Label::new(self.title.clone()))
+                        .child(Divider::horizontal())
+                        .child(
+                            Label::new(format!("Process ID (PID): {}", self.pid))
+                                .color(Color::Muted)
+                                .size(LabelSize::Small),
+                        ),
+                )
+        })
+    }
+}